bandwagon, machine mining IS airleg mining! Mechanised mining is the term generally applied to electric/hydraulic drills & diesel LHD/trucks.
Sorry to correct you but I'm sure there would be a few machine miners out there who would appreciation the clarification.
For the numbers people - machine mining (airlegging) production will cost above twice the price of mechanised production. Less capital but higher opex & less dilution. It's a trade-off. Depends also of course on orebody morphology, suitablility & method.
HArdrock.
bandwagon, machine mining IS airleg mining! Mechanised mining is...
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